Ink jet recording method and ink jet recording apparatus

a recording method and ink jet technology, applied in the direction of inks, duplicating/marking methods, printing, etc., can solve the problems of difficult normal ink ejection, and achieve the effect of suppressing ink deposition and excellent color development ability

Active Publication Date: 2019-11-26
CANON KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The method enables recording of images with excellent color developability while preventing ink deposition on the recording head, thereby maintaining stable ink ejection properties.

Problems solved by technology

It has been revealed, however, that there occurs another drawback that the ink ejected by the preliminary ejection operation is deposited on an ink receiving member (hereinafter, also referred to as “ink deposition”) and the resulting ink deposit adheres to a recording head, thereby making normal ink ejection difficult.

Method used

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  • Ink jet recording method and ink jet recording apparatus
  • Ink jet recording method and ink jet recording apparatus

Examples

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examples

[0074]The present invention will hereinafter be described in further detail with reference to Examples, Comparative Examples and Reference Examples. The present invention is not limited by the following Examples insofar as it departs from the scope of the invention. The amount of the component with “part” or “parts” or “%” will be based on mass unless otherwise particularly noted. The weight-average molecular weight of the resin is a value expressed in terms of polystyrene measured by gel permeation chromatography under the above-described conditions.

[0075]

[0076]A four-necked flask equipped with a reflux tube, a dropping funnel, a thermometer and a stirrer was provided. After the flask was purged with nitrogen, 100 parts of tetrahydrofuran, the kind and amount of monomers shown in Table 1, and 0.16 part of a polymerization initiator (azobisisobutyronitrile) were poured in the flask. The resulting mixture was heated to 70° C. while stirring and was reacted. An aqueous potassium hydro...

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Abstract

Provided is an ink jet recording method capable of recording an image excellent in color developability while suppressing ink deposition. The ink jet recording method includes ejecting an aqueous ink from an ejection orifice of a recording head based on image data to record an image on a recording medium and ejecting the heated ink to an ink receiving member from the ejection orifice based on preliminary ejection data. The aqueous ink contains a pigment and a resin dispersant for dispersing the pigment and satisfies at least one of requirement (1): the resin dispersant is a water-soluble acrylic resin having an acid value of 135 mgKOH / g or less and requirement (2): the aqueous ink further contains a water-soluble acrylic resin having an acid value of 135 mgKOH / g or less. The pigment is carbon black whose cumulative 50% particle size in volume-based particle size distribution is 80 nm or less.

Description

BACKGROUND OF THE INVENTIONField of the Invention[0001]The present invention relates to an ink jet recording method and an ink jet recording apparatus.Description of the Related Art[0002]In recent years, there has been an increasing demand for an ink (pigment ink) containing a pigment as a coloring material and having the advantage that it can record an image excellent in water resistance, light resistance and gas resistance in an ink jet recording method. The pigment ink has, however, the drawback that compared with an ink (dye ink) containing a dye as a coloring material, it has a difficulty in recording an image excellent in color developability on a recording medium such as glossy paper. With a view to overcoming such a drawback and recording an image excellent in color developability, there has been proposed, for example, an ink jet recording ink using a resin dispersed pigment obtained by dispersing a particle-size-reduced pigment with a resin dispersant (Japanese Patent Appli...

Claims

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Application Information

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Patent Type & AuthorityPatents(United States)
IPC IPC(8): B41J2/21C09D11/037C09D11/033C09D11/102C09D11/107C09D11/324C09D11/326B41J2/01B41M5/00
CPCC09D11/326C09D11/037B41M5/0011C09D11/033C09D11/102C09D11/107B41J2/2107C09D11/324B41J2/01B41M5/0023
InventorNISHINO, YUKIMORIBE, KENJI
OwnerCANON KK